Key facts
- This page summarizes Natale S. Ricciardi's Form 4 filing for RAPID MICRO BIOSYSTEMS, INC. (RPID).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 02 Mar 2026, 18:11.
Natale S. Ricciardi - 27 Feb 2026 Form 4 Insider Report for RAPID MICRO BIOSYSTEMS, INC. (RPID)
- Reporting relationship
- Director
- Issuer ticker
- RPID
- Reported as of
- 27 Feb 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 02 Mar 2026, 18:11:14 UTC
- Prior SEC filing
- 27 May 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Sean M. Wirtjes, Attorney-in-Fact for Natale S. Ricciardi
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Natale S. Ricciardi filed Form 4 for RAPID MICRO BIOSYSTEMS, INC. (RPID) on 02 Mar 2026.
Change
- Previous filing in this sequence was filed on 27 May 2025.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001107158
Primary reporting owner
RICCIARDI NATALE S
- Relationship
- Director
- Address
- C/O RAPID MICRO BIOSYSTEMS, INC., 25 HARTWELL AVENUE, LEXINGTON
- Signature
- /s/ Sean M. Wirtjes, Attorney-in-Fact for Natale S. Ricciardi
- Signature date
- 02 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
RPID
transaction
Class A Common Stock
Options Exercise
- Transaction value
- $632
- Shares
- +842
- Change %
- +2.9%
- Price
- $0.7500
- Shares after
- 29,442
- Date
- 27 Feb 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
RPID
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $632
- Shares
- -842
- Change %
- -100%
- Price
- $0.7500
- Shares after
- 0
- Date
- 27 Feb 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 842
- Exercise price
- $0.7500
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
The option is fully vested and exercisable.